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What voltage is required to run a 75 watt light bulb if the current is 0.5 Amps?
Wiki User
∙ 14y ago
For a resistive load like an incandescent light bulb Watts = Volts * Amps. In your home your voltage is fixed and may fluctuate somewhat due to a number of factors. The math is easy for a 60W bulb at 120 volts which yields a current of 1/2 (.5) Amps. The current for 75 W bulb at 120 V would be .625 A. You would need a 150VAC source to only draw .5 A.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agodifferent light bulb or (lamps) are designed to operate at different voltages what you need to do is read the spec of the lamp in question and so you know you couldn't have accurately calculated the drawn current without first knowing the operating voltage
Jaquavious Clemmons
45V
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How many volts amps required a 12 volt audio radio?
Power equals voltage times current in amps. The value of amps used is needed to do the math.
How many amps does a 65 watt light bulb draw?
Find out your supply voltage, and divide 65 by it: I(amps) = P(watts)/V(volts) = 65/V
Can I use a laptop ac adapter with the same volts but higher amps?
Yes. The current rating listed is the _maximum_ current that the power supply can provide without a drop in voltage.
What equation would you use to calculate how much current in AMPs is required to achieve the full 100 to output from a volt bulb?
The bulb is marked with the power (watts) and the voltage. Divide the watts by the volts and you have the amps.
How many amps in Mega Watt?
One Megawatt = 1,000,000 watts. Watts = Volts x Amps or voltage x current. Hence if you know the voltage then Amps = 1,000,000 watts / Volts.
What voltage is required to sustain a current of 0.50 through a light bulb resistance of 190?
The voltage of a circuit with a resistance of 250 ohms and a current of 0.95 amps is 237.5 volts. Ohms's law: Voltage = Current times Resistance
How many volts amps required a 12 volt audio radio?
Power equals voltage times current in amps. The value of amps used is needed to do the math.
How many amps in a low voltage light bulb?
Look on the light bulb for the voltage and the power in watts. Then divide the watts by the voltage and that gives the amps. Some CFL bulbs also state the current as well as the voltage and power, which is because they can have a poor power factor.
What voltage required to send a current of 4 amps through a resistance of 60ohm?
16 volts
How much current flows in a 12-watt radio connected to a 120-volt circuit?
Since power = current x voltage, you would divide the power (watts) by the voltage. The answer would be 1/10 amps or .10 amps.
Which component links power and voltage?
current is the other factor. power (wattage) is the product of current (amps) and voltage
What voltage is applied to a 4 ohm resistor if the current is 1.5 amps?
Ohm's law: Volts = amps times ohms In the case of a 4 ohm resistor with 1.5 amps of current, the voltage is 6 volts.
How many amps are in 95kw?
It depends on what the voltage is: A Watt is a unit of power described as "1 ampere of current pushed by 1 volt of Electro-motive force", therefore 1W = 1A x 1V. 1 kW is a "kilowatt" or 1000 Watts. Using the above formula, and a little algebra, you can find the current required to deliver any amount of power depending on the applied voltage: Current = Power / Voltage; symbolically expressed as I = P / V examples: * 9.5kW x (1000W/kW) / 120v = 79.2 amps * 9.5kW x (1000W/kW) / 240v = 39.6 amps * 9.5kW x (1000W/kW) / 480v = 19.8 amps (Notice how raising the voltage reduces the required current?)
How is volts different from amps?
voltage is measured in terms of volts ; current is measured in terms of amps.........................................
How many amps does a 65 watt light bulb draw?
Find out your supply voltage, and divide 65 by it: I(amps) = P(watts)/V(volts) = 65/V
How many amps are required to run a 240-volt 5500-watt water heater element?
Current (Amps) = Power (Watt)/Voltage (V) Therefore a 4500W heating element will draw 18.75A = 4500W/240V
How do you convert DC voltage to watts?
You would also need to know the current in amps. The formula you need is this: P = I V Power (in watts) = current (in amps) x voltage (in volts)
